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27229b2a LM |
1 | #! /bin/bash |
2 | # | |
3 | # Copyright (C) 2016, Lukasz Majewski <l.majewski@majess.pl> | |
4 | # | |
5 | # SPDX-License-Identifier: GPL-2.0+ | |
6 | # | |
7 | ||
8 | # This file extracts default envs from built u-boot | |
0778e7c5 | 9 | # usage: get_default_envs.sh [build dir] > u-boot-env-default.txt |
27229b2a LM |
10 | set -ue |
11 | ||
0778e7c5 LM |
12 | : "${OBJCOPY:=${CROSS_COMPILE:-}objcopy}" |
13 | ||
14 | ENV_OBJ_FILE="built-in.o" | |
27229b2a LM |
15 | ENV_OBJ_FILE_COPY="copy_${ENV_OBJ_FILE}" |
16 | ||
17 | echoerr() { echo "$@" 1>&2; } | |
18 | ||
0778e7c5 LM |
19 | if [ "$#" -eq 1 ]; then |
20 | path=${1} | |
21 | else | |
22 | path=$(readlink -f $0) | |
23 | path=${path%/scripts*} | |
24 | fi | |
25 | ||
26 | env_obj_file_path=$(find ${path} -path "*/env/*" -not -path "*/spl/*" \ | |
27229b2a LM |
27 | -name "${ENV_OBJ_FILE}") |
28 | [ -z "${env_obj_file_path}" ] && \ | |
29 | { echoerr "File '${ENV_OBJ_FILE}' not found!"; exit 1; } | |
30 | ||
31 | cp ${env_obj_file_path} ${ENV_OBJ_FILE_COPY} | |
32 | ||
33 | # NOTE: objcopy saves its output to file passed in | |
0778e7c5 LM |
34 | # (copy_${ENV_OBJ_FILE} in this case) |
35 | ||
36 | ${OBJCOPY} -O binary -j ".rodata.default_environment" ${ENV_OBJ_FILE_COPY} | |
27229b2a LM |
37 | |
38 | # Replace default '\0' with '\n' and sort entries | |
39 | tr '\0' '\n' < ${ENV_OBJ_FILE_COPY} | sort -u | |
40 | ||
41 | rm ${ENV_OBJ_FILE_COPY} | |
42 | ||
43 | exit 0 |